Negussa , D.; A, S. Protolitic Equilibria and Stability Constants of Mn (II) and Ni (II) Complexes of 3-Formylpyridine Formylpyridine Thiosemicarbazone in Sodium Dodecyl Sulphate(SDS)- Sulphate(SDS) Water Mixture. STAR 2015, 4, 74-79.